Closure for paper boxes



P. J. MCGRATH.

CLOSURE FOR PAPER BOXES.

APBLICAHON FItED JUNE 5, 1.920.

Patented Dec. 14, 1920.

15 Snow/ oz flun m 0.

- reals frequently allows v practices, with cleanin contents of such boxes,

um'reo srA-rl-zs PATENT OFFICE.

PATRICK J. mcemrn, or- BROOKLYN, NEW 2011K? CLOSURE FOR PAPER BOXES.

1,362,332. Specification of Letters Patent.

Application filed June 5, 1920. Serial No. 386,889. T0 whom it may concern: I Fig. 4 is a perspective view of a modified Be It known that I, PATRICK J. MCGRATH, form of my improved paper box closure. a cltizen of the United States, and a, resident F 1g. 5 is a section on the line 5-5 of of Brookl n, in the county of Kingsv and F 1g. 4. 7 State of ew York, have invented certaln F 1g. 6 1s a perspective view of another new and useful Improvements in Closures for Pa er Boxes, of which the following is a speci cation.

This invention relates to closures for paper boxes or cartons such as are ordinarily used for holding cereals, sugar, washing and powders, and many other powdered, aked, and granular substances.

The main object of the invention is to provide improved means to discharge the and to protect the contents of partly discharged packages when allowed to stand until used, as well as to provide means to protect full packages. 4

Heretofore it has been customaryto out or tear open the end of the box to allow the contents to be poured out. This tends to waste the materials, and in the case of cethem to spoil be-- fore they are used up. It also allows dust and dirt to enter the package and is alto gether unsanitary when foods are in the boxes.

My improved all the above objectionable features and practically no additional cost.

My improved closure consists primarily in forming a discharge opening directly through the end of the box, through the folded end flaps thereof where they are pasted together, in a central position there-' in, providing a seal forthe opening, and a movable closure foruse after the seal is broken throu h and x the box allowed to stand partly lled..

The means I prefer to employ to accomplish the foregoing objects together with other features of my improved paper box closure which will appear during the proglress of the description, are illustrated in the drawing accompanying and forming part of this specification, and in'which,

igure 1 is a perspective view of th pjreferred form of my improved paper ox closure. I Fig. 2 is a section .on the line 2-2 of F1 1. Fig. Fig. 1.

the figures of the paper box closure prevents readily be broken modified form of my improved paper box closure.

Fig. 7 is a detail plan of a spacing member for the closure.

form of closure.

Like characters refer to like parts in all drawing.

Referring to Figs. 1, 2, and 3, the letter C designates the paper box or carton of which the upper part only is shown, 2, 3, 4, and 5 refer respectively to the front, rear, right side, and left side walls of'the box, and 6 designates the contents thereof. In this form, they flaps attached to the four walls are folded-down so as to form four plies of' paper on cardboard at the central partas shown in Figs. 2 and 3. 7 "designates the right hand side fla'p, 8 the left hand side flap, 9 the front flap, and 10 the rear flap of the box.

In this form I provide, a circular discharge opening passing through all four of said flaps near the middleportion of the top end of the box and designated by 11. This opening can readily be formed in the box blank ously the latter is formed in a. punch press.

Between the front and rear flaps are placed a spacing member 12 having a slot or opening'13, and a closure member 14, the spacing member being pasted to the flaps and the closure member being freeto slide backward and forward so as to cover and unby perforating each flap simultane with the punching of the blank, when w Patented Dec. 14, 1920. i

cover the opening 11 in the front and side ignated by 16 and seals the opening 11, and

designated by 17 and the other of which is placed on the corner 18 of the box, normally covering the front end of the closure 14. This last seal is of very thinpaper and can through to free the closure 14. e The seal 16 is readily broken through by pressing it in with a knife handle or other convenient means after pulling out the closure until the stop pin 14 prevents further 'movement. The contents of the box can now be poured out, and when all of said contents are not required for immediate use,-the closure 14 is pushed back in the slot 19 between the two flaps 9 and 10 and the box is thus conveniently closed until it is desired to use the .remaining material, whereupon the closurecan be again ulled out and the contents poured out as be ore.

The form of the invention illustrated in Figs. 4 and 5, differs from the form already described in having but one sealing member, which is the sealing member 16 to close the opening 11. In this form the spacing piece 12 is omitted th closure member 14 is thinner and fits rather tightlyin the slot 19 when first assembled so that it will not readily slip out and spill the contents of the box through the slot 19. On using a little pressure however the closure will work readily. The 010- sure for both forms is illustrated in detail in Fig. 8 and will be seen to consist merely of a rectangular piece of paper board having the tab 15 attached. The tab consists of, a slip of paper gummed on one side, creased, and

attached to both sides of the ce ntral front part of the rectangular paper board member .14. The portion extending out from the member 14 is finished by pressing the two plies together to form a n inte ral member.

.Fig. 6 illustrates a form 0 -the invention having a single sealing member 20 whichcovers the opening 11 through the flaps 7, 8, 9, and 10. The rear flap 10 is slit at 21 and 22, and the closure portion '23 has'a frontportion 24 bent over the front edge 18 of the box. The side-portions 25 and 26 of the flap 10 are pasted down onto the flap 9. The sealing member 20v is pasted to the portions 23, 25, and 26, and extends from the back edge 27 of the box to the front edge 18, over the latter, down a short distance,

, a gummed portion on the back of the portion 24. This form may be still further modified by inserting one of the closures 14 under the member 23 wider than said member with the tab 15 underneath the portion 24.

F ig. 9: illustrates a closure having the tab 15 integral, and a stop 14 also made integral with 14 which is preferably of card board, the said stop being somewhat narrower than the tab 15, bent downwardly and forward at about 45 degrees to the horizontal-plane.

What I claim is 1. The combination with a paper box having folded down end flaps forming one end of the box and a discharge opening through said end, of a slidable closure for said opening and means to limit the opening and closing movements thereof.

2. Thecombination with a paper box hav ing folded down end flaps forming one end of the box and a discharge opening through said end, of, a closure for said opening which is slidable between two of said flaps, and embodies a'stop portion to limit its opening and closing movements.

3. The combination with a paper box having folded down flaps forming oneeiid of the box and a discharge opening through said end, of a slidable closure for said opening and a slotted spacing member for'the closure both located between two of said 

